Safety device for air-brakes.



PATENTED SEPT. 1, 1908.

3. JUDGE. VSAFETY DEVICE FOR AIR BRAKES.

APPLICATION FILED MAY 14, 1908.

2 SHEETQ-SHEET 1,

ATTORNEYS WITNESSES No. 897,748 PATENTED SEPT. 1, 1908.

J. JUDGE.

SAFETY DEVICE FOR AIR BRAKES APPLICATION FILED MAY 14, 1908.

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v I ATTORNEYS UNITED STATES PATNT @FTC 1 JOSEPH JUDGE, OF PITTSTON,PENNSYLVANIA.

SAFETY DEVICE FOR AIR-BRAmS.

' Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed May 14, 1908. Serial No. 432,794.

'1 provided a pivoted or swivelcd pipe terminating' in a frangibleportion extending into the path of the signal or other means ada t-' edto engage therewith. Upon the breaking of the frangible portion, the airis permitted to escape to operate the brakes. In my resent constructionI seek to eliminate the 'rangible pipe, and provide a valve andoperating lever therefor, so constructed that when the lever is movedthe valve opens, but a return movement of the lever to its originalosition does not in itself close the valve. also provide means wherebyevidence will be recorded as to the number of times the safetydevice'has been operated on each trip or journey.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the ligures, and in which Figure 1 is a sideelevation of a portion of a locomotive provided 'with my improved safetydevice; Fig. 2 is a top plan view on a larger scale than Fig. 1 Fig. 3is a front elevation of the parts shown in Fig. 2; Fig. 4 is a verticalsection through the pivotal mounting of the air brake pipe; Fig. 5 is avertical section'through the outer end of the pipe; Fig. 6 is atransverse section on the line 66 of Fig; 5-; Fig. 7 is a horizontalsection on the line 77 of Fi 5 and Fig. 8 is a transverse section on thelinc 88 of Fig. 5.

lin my improved construction, I provide a suitable platform or standard10, mounted in a horizontal position upon the roof of an engine cab bymeans of suitable legs or 'supports 11, and mounted upon this lloor orplatform is a branch of the air pipe. The pipe includes a branch 12extending from the main air pipe to the upper surface of the platform,an outwardly-extending pipe 13,

'13 may be completely cut oil.

substantially parallel thereto.

and pivotal connections between the two. The pipe .12 preferably leadsto a base 14 terminating in an upwanlly-extending hollow plug 15 and thepipe 13 terminates at its in nor end in a sleeve or casing 16,encircling the plug and held thereon by a suitable nut and washer at theouter end of the plug 15.

The plug is provided with a port 17 in one side thereof, so that whenthe pipe 13 is in one position the interior thereof communicates freelywith the pi )e 12, but when the pipe 13 is rotated about'tl the supplyof air from the pipe 12 to the pipe Thepipe 13 is provided with anupwardly-turned portion 18 and an outwanlly-extending portion 19 rigidin respect to the pipeportion 13 and At the outer end of the pipeportion 19 is mounted the main feature of my invention.

The outer end of the pipe portion 19 constitutes a valve seat, ampivoted to the lower edge of the end of the pipe adjacent its valveseat, is a valve 20 having a washer or lining 21 of rubber, leather orother suitable material. The valve is pivoted to swing on a horizontalaxis, so that when released at its upper end, it will swing downwardlyto a position below the valve seat. The pipe portion 19 carries anupwaidly-extending plvot 22 u on which is mounted an operating arm 23.The arm swings in a horizontal plane and is adapted to normally hold thevalve in its closed position, but when swung to one side, the valve maydrop to its open position and the operating arm may tlren freely moveabout the pivot 22 and even return to its ori inal position but will notoperate to close t e valve. The valve plate preferably terminates in anupwardly-extending pin 24, and on the under surface of the arm .23 is asliding block 25 having a recess 26 adapted to receive the pin 24 of thevalve )late. The block 25 is slidable longitudinal y of the arm, and ispreferably supported by a stud .27 extending through a slot in the arm.The stud carries a washer 28 upon the outer surface and engages with aspring 29 for drawing the block longitudinally and holding it againstthe pin 24 of the valve seat. The opposite end of the s wing is securedto a bolt 30 extending t u'ough a bracket Ill carried by the arm 23 atits base. he block 25 is curved at one end upon opposite sides 'of thenotch or recess 26, and the arm. presents a shoulder having curvedflanges 32 substantially parallel to the 10 plug 5 as a center,-

valve sticking to its seat after being released.

by the arm. Thearm 23 may be of... any length whatsoever dependent uponthe position on the cab and the nature of the obstruction with which. itis adapted to engage. As

\ shown, the arm is provided with an extension 33 rigidly securedthereto, so that the arm may engage with an obstruction 34, shown inFig. 2, and beyond the end of the main portion of the arm 23. i

In order to prevent the arm from being moved to one side accidentally,by jarring, or by the action of the wind, 1 preferably provide smalllocking plates $5 of thin cast iron secured to the sides of the arm 23adj acent the pivot and adapted to engage with opposite sides of theouter end oi" the pipe section. 19. These cast iron plates may besecured in place in any suitable manner, as, for instance, by set screws36, and are of such 25 thickness and dimensions that they will bereadily broken when the outer end of the arm 23 is struck a blow of therequireduforcc. Upon the breaking oi the indicating plates 35, the armmay swing to positively open the I valve and the latter will remain inits open position until the engineer replaces it in a manner hereinafterdescribed. The engineer would relerably carry a predetermined number ofthese indicating plates upon loaving the car barn or shops, and at theend of the run or travel he must turn in the remaining lates in hispossession. The dilierence in t 1e number will be the number of timesthe arm has collided with a signal or obstruction and will indicate thecare the engineer has takenin managing h s train.

Extending through the roof of the cab and also through the latl'orm orsupport 10, l

rovide a vertica rock shaft 37 having a.

andle 38 secured to the lower end thereof,

as shown in dotted lines in F ig. 2. The upper end of the shaft isprovided with a lever 39 connected by a link 40 to .a lever 41 rigidlysecured to the valve casing 16 of the 54) pipe 13. By moving the handle38, the

- pipe 13 may be swung about the base i 4 as a center to a ositionlongitudinally oi the track rather than transversely. The pipe .13 andall ofthc parts carried thereby then assumo the position indicated indotted lines in Fig. 2 and engagewith a stop 42 on the platform 10. Thismovement serves to close the ort 17 and prevent the further escape oi"air i'rom the train pipe. l/Vhile holding the parts in this osition, theengineer may'swing the valve p ate upwardly against its scat, return thearm 23 to such a position that it will hold the valve to its seat, and.may then ap- 1y new indicating lates 35. For normal 5 olding the pivotedpipe portion in its outstructions, the device will operate to auto wardor extended position, the lever 38 is preferably connected by a link 43to an arm 44 of any suitable spring mechanism'45 of the type commonlyemployed in closing doors. This-mechanism will slowly return theparts'to their outward or operative posh tion, but will prevent thesudden swinging or-slamming thereof.- The )lati'orm or base v preferablycarries a vertically-disposed plate 46 adapted to engage with thevertical portion 18 of the pivoted pipe and act as a stop to limit themovement in one direction.

The outerarm 33 may engage with the semaphore signal arm or may engagewith any other suitable mechanism which is so moved into the path of thearm 33 when'it is desired to stoptho train. Obstructions may be placedalong the track at predetermined intervals, so that in order that theengineer ma )ass them he must o aerate the handle 35 y l 1 j 38 to swingthe device to t 1e position shown in dotted lines in Fig. 2 Should he beneglooting his duty or not watching for the obniatically apply thebrakes. Various changes may be made in the speci'lic construction shownwithout de artlng from the spirit of my invention. or in--- stance, acasing or covering may be mounted on the cab toprotect the partsofthedevice from the elements or he device may be 1 mounted upon any otherpart oi the engine or on any-part oil" any car of the train. I

llaving thus described my invention, 1 claim as new and desire to secureby Letters" Patent:

1. In an air brake system, ail air pipe hav ing the end thereof forminga valve seat, a valve hinged adjacent said seat, and a movable armadaptcd to be operated by engage- 1 05 ment with an. obstruction, andserving to normally hold said valve in its closed position.

2. In an air brake system, an air pipe having the end thereotlorming avalve seat, a valve hinged adjacent said seat, a movable arm adapted tobe operated by engagement with an obstruction, and serving to normallyhold said valve in its closed position, and means carried by said ar'mfor positively disengaging said valve from itsseat upon the movement ofthe arm. j

3. luau air brake system", an air pipe hav ing the end. thereof forminga :valve seat, a valve hinged. adjacent said valve seat, an arm pivoted.to said pipe and adapted to be moved on its pivot by engagement with anobstruction, andv means carried by said arm lor normally holding saidvalve in its closed position.

4. In an ai' valve hinged. adjacent said valve seat, an

arm pivoted to said pipe and adapted to be.

moved on its pivot by engagement with an:

obstruction, means carried bysaid arm for r30 flap valve closing the endthereof and having an upwardly-extending projection, an. arm pivoted tothe upper side of said pipe adjacent the end thereof, and means carriedby said arm for engagement with said projection'to hold said valve inits closed position.

6. In an. air brake systen'i, an air pipe, a flap valve closing the endthereof, a ivoted arm, a spring-pressed block carried y said arm and inengagement with said valve for normally holding the same in its closedposition, and means whereby the movement of said arm positively openssaid valve.

7. In combination with a train pipe, a swivel valve connected therewith,a pipe connected with said valve, a second valve closing said pipe, andan arm pivoted. to said pipe for holding said valve in its closedposition.

' 8. In combination with a train pipe, a swivel valve connectedtherewith, a pipe connected with said valve, a second valve closing saidpipe, an arm pivoted to said pipe for holding said valve in its closedposition, and means carried bysaid arm for normally holding thesamerigid in respect to said pipe.

9. In combination with a train pipe, a swivel Valve connected therewith,a pipe connected with said. valve, a second valve closing said pipe, anarm pivoted to said pipe for holding said valve in its closed posltidn,and frangible means carried by said arm for normally holding the samerigid in respect to said pipe. p

10. in combination, anair pipe, a valve for closing said pipe, an armpivoted to said pipe for holding the valve in its closed position, andfrangible means for holding said arm and pipe normally rigid in respectto each other.

11. In combination, an air pipe, a valve for closing said pipe, amovable arm for holdin the val've'in its closed position, and frangi lemeans for holding said arm and pipe normally rigid in respect to eachother.

12. In combination, an air pipe, a valve for closing said pipe, amovable arm, means carried. by said arm for resiliently holding saidvalve to its seat, means for positively disengaging said valve from itsseat upon the movement of the arm, and means for normally preventingmovement of the arm in respect to the valve.

In testimony whereof I have signed my nameto this specification in thepresence of two subscribing Witnesses.

JOSEPH JUDGE.

Witnesses:

W. Hi GILLEsPIE, MQJ. BERRY.

